857401159 has 2 divisors, whose sum is σ = 857401160. Its totient is φ = 857401158.

The previous prime is 857401099. The next prime is 857401189. The reversal of 857401159 is 951104758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857401159 - 2¹⁹ = 856876871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857401189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428700579 + 428700580.

It is an arithmetic number, because the mean of its divisors is an integer number (428700580).

Almost surely, 2^857401159 is an apocalyptic number.

857401159 is a deficient number, since it is larger than the sum of its proper divisors (1).

857401159 is an equidigital number, since it uses as much as digits as its factorization.

857401159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 857401159 is about 29281.4132001855. The cubic root of 857401159 is about 950.0096615823.

The spelling of 857401159 in words is "eight hundred fifty-seven million, four hundred one thousand, one hundred fifty-nine".